This publication was originally written by Nancy Paulu, with updates for the current edition completed by Marina Balentine Walne and Fran Lehr. Illustrations were done by Adjoa Burrowes and Joe Matos.

This booklet has been made possible with the help of many people and organizations, including Reid Lyon, Margaret Feerick and Kyle Snow of the National Institute of Child Health and Human Development, who reviewed drafts, provided materials and suggestions and generously contributed from their own experiences. In addition, a special thanks to Todd May and Menahem Herman in the Office of Communications and Outreach for their help in managing the design, development, production and distribution of this booklet.